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| author | Daniel Borkmann <dxchgb@gmail.com> | 2012-11-08 11:41:39 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-11-17 22:12:47 -0500 |
| commit | 5082dfb71600b4d227c3f0af630c0cd3158e1feb (patch) | |
| tree | 11568d0bb1e82b280fb2a8d9af6a63eadc81bb0d /arch/powerpc/net | |
| parent | 02871903a1fcdf306a906c38566ca0d48a45a431 (diff) | |
| download | linux-5082dfb71600b4d227c3f0af630c0cd3158e1feb.tar.bz2 | |
PPC: net: bpf_jit_comp: add VLAN instructions for BPF JIT
This patch is a follow-up for patch "net: filter: add vlan tag access"
to support the new VLAN_TAG/VLAN_TAG_PRESENT accessors in BPF JIT.
Signed-off-by: Daniel Borkmann <daniel.borkmann@tik.ee.ethz.ch>
Cc: Matt Evans <matt@ozlabs.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/powerpc/net')
| -rw-r--r-- | arch/powerpc/net/bpf_jit_comp.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c index b9434de8222b..e834f1ec23c8 100644 --- a/arch/powerpc/net/bpf_jit_comp.c +++ b/arch/powerpc/net/bpf_jit_comp.c @@ -13,6 +13,8 @@ #include <asm/cacheflush.h> #include <linux/netdevice.h> #include <linux/filter.h> +#include <linux/if_vlan.h> + #include "bpf_jit.h" #ifndef __BIG_ENDIAN @@ -89,6 +91,8 @@ static void bpf_jit_build_prologue(struct sk_filter *fp, u32 *image, case BPF_S_ANC_IFINDEX: case BPF_S_ANC_MARK: case BPF_S_ANC_RXHASH: + case BPF_S_ANC_VLAN_TAG: + case BPF_S_ANC_VLAN_TAG_PRESENT: case BPF_S_ANC_CPU: case BPF_S_ANC_QUEUE: case BPF_S_LD_W_ABS: @@ -382,6 +386,16 @@ static int bpf_jit_build_body(struct sk_filter *fp, u32 *image, PPC_LWZ_OFFS(r_A, r_skb, offsetof(struct sk_buff, rxhash)); break; + case BPF_S_ANC_VLAN_TAG: + case BPF_S_ANC_VLAN_TAG_PRESENT: + BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, vlan_tci) != 2); + PPC_LHZ_OFFS(r_A, r_skb, offsetof(struct sk_buff, + vlan_tci)); + if (filter[i].code == BPF_S_ANC_VLAN_TAG) + PPC_ANDI(r_A, r_A, VLAN_VID_MASK); + else + PPC_ANDI(r_A, r_A, VLAN_TAG_PRESENT); + break; case BPF_S_ANC_QUEUE: BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, queue_mapping) != 2); |